Gunnhild S Kravdal

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The purpose of this study was twofold: (1) to measure the radiation exposure to family members of out-patients with thyrotoxicosis treated with radioiodine, 131I, using the recommendations from the European Commission (EC) guidance and age-specific periods for behaviour restrictions; (2) to use the results to identify necessary restrictions to ensure(More)
BACKGROUND Heterophilic antibodies are still an important source of interference in immunoassays. We have conducted a screening study for interference in a panel of commercially available assays using two sera known to contain high titer Fc-reactive heterophilic antibodies. METHODS The sera were distributed to laboratories participating in the Nordic(More)
BACKGROUND Whether cardiac troponin concentrations are increased by reversible myocardial ischemia is controversial. Differences in the structure of cardiac troponin I (cTnI) and cTnT may have implications for diagnostic utility. METHODS cTnI was measured with a prototype high-sensitivity (hs) assay in 198 patients referred for myocardial perfusion(More)
Whether reversible ischaemia in patients referred for exercise stress testing and MPI (myocardial perfusion imaging) is associated with changes in circulating cTn (cardiac troponin) levels is controversial. We measured cTnT with a sensitive assay before, immediately after peak exercise and 1.5 and 4.5 h after exercise stress testing in 198 patients referred(More)
In the examination of a patient with acute headache in which subarachnoid haemorrhage is suspected, a CT scan of the brain should be performed without delay. If the CT scan does not confirm subarachnoid haemorrhage, the next step is a lumbar puncture. This should not take place before twelve hours have elapsed from the start of the headache, so as to allow(More)
BACKGROUND In spite of increased vigilance of undiagnosed type 2 diabetes (DM2), the prevalence of unknown DM2 in subjects with morbid obesity is not known. AIM To assess the prevalence of undiagnosed DM2 and compare the performance of glycated A1c (HbA1c) and fasting glucose (FG) for the diagnosis of DM2 and prediabetes (preDM) in patients with morbid(More)
Increased circulating osteoprotegerin (OPG) levels have been associated with the prevalence and severity of coronary artery disease and the risk of cardiovascular death. OPG is a cytokine of the tumor necrosis factor receptor superfamily and is expressed in various cell types in the body, including osteoblasts, inflammatory cells, vascular smooth muscle(More)
OBJECTIVES To assess the merit of a novel single-epitope sandwich (SES) assay specific to the stable part of BNP in patients with reversible myocardial ischemia as post-translational modifications of BNP may influence assay performance. DESIGN AND METHODS We measured BNP concentration by a conventional assay and the SES-BNP assay in 198 patients referred(More)
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